LC-32HT2U
6 – 2
No audio output during UHF/VHF reception
Is Video output during UHF/VHF reception normal?
NO
Check the tuner and RF-SW (UNT 501).
YES
Is SIF output from the tuner (TU1101_Pin3) normal?
NO
Check the tuner and peripheral circuits.
YES
Is input signal fed to pin 21 (SOUNDIF 1) of IC1401 (SIF Demod-
ulator) normal?
NO
Check the filter circuits (CF1101-3 and Q1102-3) and peripheral
circuits.
YES
Are audio signals from pins 29 and 30 (SC2_OUTL/R) of IC1401
to pins 51 and 52 of IC1403 (CODEC) normal?
NO
Check between pins 29 and 30 (SC2_OUTL/R) of IC1401 and
pins 51 and 52 of IC1403 (CODEC).
YES
Are audio outputs (A-OUT_L/R) of pins 38 and 39 of IC1403 nor-
mal?
NO
Are the LRCK, BICK, SDTO and SDTI signals sent from IC1403
to IC1406 (DSP) normally?
YES
YES
Check IC1403 and peripheral circuits.
Is audio input from pins 38 and 39 of IC1403 to pins 11 and 15 of
IC2701(STEREO_AMP) normal?
NO
Check the circuits between pins 38 and 39 of IC1403 and pins 11
and 15 of IC2701. (MUTE circuits: Q1306-8)
YES
Is audio output from IC2701 normal?
NO
Check IC2701 and peripheral circuits.
YES
Is the speaker switching circuit (T2701) normal?
YES
Check the connector (P2703) of IF_UNIT and around the speak-
ers.
No monitor audio output
Is monitor audio output set to “Variable”?
YES
Reset monitor audio output to “Fixed”.
NO
Are audio output pins 40 and 41 of IC1403 (CODEC) normal?
NO
Check IC1403 and peripheral circuits.
YES
Are audio output pins 7 and 1 of IC1407 (Buffer_AMP) normal?
NO
Check IC1407 and peripheral circuits.
YES
Check between IC1407 and MONITOR OUTPUT terminal (pins
10 and 16 of J502).
Содержание LC-32HT2U
Страница 47: ...LC 32HT2U 7 2 MEMO ...
Страница 53: ...LC 32HT2U 9 2 10 11 12 13 14 15 16 17 18 19 ...
Страница 56: ...LC 32HT2U 9 5 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 MAIN Unit Side B ...
Страница 57: ...LC 32HT2U 9 6 10 11 12 13 14 15 16 17 18 19 ...
Страница 60: ...LC 32HT2U 9 9 2 IF Unit A C B D E F G H 1 2 3 4 5 6 IF Unit Side A ...
Страница 64: ...LC 32HT2U 9 13 5 KEY Unit A C B D E F G H 1 2 3 4 5 6 KEY Unit Side A ...
Страница 66: ...LC 32HT2U 10 2 2 MAIN Unit MAIN Unit 1 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Страница 68: ...LC 32HT2U 10 4 MAIN Unit 2 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Страница 80: ...LC 32HT2U 10 16 MAIN Unit 8 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Страница 82: ...LC 32HT2U 10 18 MAIN Unit 9 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 83: ...LC 32HT2U 10 19 10 11 12 13 14 15 16 17 18 19 ...
Страница 84: ...LC 32HT2U 10 20 MAIN Unit 10 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 85: ...LC 32HT2U 10 21 10 11 12 13 14 15 16 17 18 19 ...
Страница 86: ...LC 32HT2U 10 22 MAIN Unit 11 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 87: ...LC 32HT2U 10 23 10 11 12 13 14 15 16 17 18 19 ...
Страница 88: ...LC 32HT2U 10 24 MAIN Unit 12 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 89: ...LC 32HT2U 10 25 10 11 12 13 14 15 16 17 18 19 ...
Страница 90: ...LC 32HT2U 10 26 MAIN Unit 13 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 91: ...LC 32HT2U 10 27 10 11 12 13 14 15 16 17 18 19 ...
Страница 92: ...LC 32HT2U 10 28 MAIN Unit 14 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 93: ...LC 32HT2U 10 29 10 11 12 13 14 15 16 17 18 19 ...
Страница 94: ...LC 32HT2U 10 30 MAIN Unit 15 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 95: ...LC 32HT2U 10 31 10 11 12 13 14 15 16 17 18 19 ...
Страница 96: ...LC 32HT2U 10 32 MAIN Unit 16 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 97: ...LC 32HT2U 10 33 10 11 12 13 14 15 16 17 18 19 ...
Страница 98: ...LC 32HT2U 10 34 MAIN Unit 17 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 99: ...LC 32HT2U 10 35 10 11 12 13 14 15 16 17 18 19 ...
Страница 100: ...LC 32HT2U 10 36 MAIN Unit 18 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 101: ...LC 32HT2U 10 37 10 11 12 13 14 15 16 17 18 19 ...
Страница 102: ...LC 32HT2U 10 38 MAIN Unit 19 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 103: ...LC 32HT2U 10 39 10 11 12 13 14 15 16 17 18 19 ...
Страница 104: ...LC 32HT2U 10 40 MAIN Unit 20 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 105: ...LC 32HT2U 10 41 10 11 12 13 14 15 16 17 18 19 ...
Страница 106: ...LC 32HT2U 10 42 MAIN Unit 21 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 107: ...LC 32HT2U 10 43 10 11 12 13 14 15 16 17 18 19 ...
Страница 108: ...LC 32HT2U 10 44 MAIN Unit 22 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 109: ...LC 32HT2U 10 45 10 11 12 13 14 15 16 17 18 19 ...
Страница 110: ...LC 32HT2U 10 46 3 IF Unit IF Unit 1 2 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 111: ...LC 32HT2U 10 47 10 11 12 13 14 15 16 17 18 19 ...
Страница 112: ...LC 32HT2U 10 48 IF Unit 2 2 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 113: ...LC 32HT2U 10 49 10 11 12 13 14 15 16 17 18 19 ...
Страница 114: ...LC 32HT2U 10 50 4 PPV Unit A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Страница 115: ...LC 32HT2U 10 51 10 11 12 13 14 15 16 17 18 19 ...
Страница 116: ...LC 32HT2U 10 52 5 R C LED Unit A C B D E F G H 1 2 3 4 5 6 ...
Страница 117: ...LC 32HT2U 10 53 6 KEY Unit A C B D E F G H 1 2 3 4 5 6 ...
Страница 118: ...LC 32HT2U 10 54 MEMO ...
Страница 146: ...LC 32HT2U 28 10 PACKING PARTS NOT REPLACEMENT ITEM S4 S2 S3 S6 S10 S1 S6 S6 S8 S6 S5 S7 S9 ...